BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	c_name,
	c_custkey,
	o_orderkey,
	o_orderdate,
	o_totalprice,
	sum(l_quantity)
from
	customer,
	orders,
	lineitem
where
	o_orderkey in (
		select
			l_orderkey
		from
			lineitem
		group by
			l_orderkey having
				sum(l_quantity) > 313
	)
	and c_custkey = o_custkey
	and o_orderkey = l_orderkey
group by
	c_name,
	c_custkey,
	o_orderkey,
	o_orderdate,
	o_totalprice
order by
	o_totalprice desc,
	o_orderdate
LIMIT 100;
                                                                                   QUERY PLAN                                                                                   
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=10328865.83..10328868.58 rows=100 width=39) (actual time=168793.180..168793.751 rows=99 loops=1)
   Buffers: shared hit=1223628 read=1200531
   ->  GroupAggregate  (cost=10328865.83..11155319.21 rows=30052850 width=39) (actual time=168793.175..168793.731 rows=99 loops=1)
         Buffers: shared hit=1223628 read=1200531
         ->  Sort  (cost=10328865.83..10403997.96 rows=30052850 width=39) (actual time=168793.144..168793.263 rows=693 loops=1)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               Sort Method: quicksort  Memory: 79kB
               Buffers: shared hit=1223628 read=1200531
               ->  Hash Join  (cost=3053941.08..5774393.83 rows=30052850 width=39) (actual time=118514.483..168787.944 rows=693 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1223614 read=1200531
                     ->  Seq Scan on lineitem  (cost=0.00..1668603.00 rows=60105700 width=8) (actual time=0.040..35841.242 rows=60045603 loops=1)
                           Buffers: shared hit=584146 read=483400
                     ->  Hash  (cost=2960003.78..2960003.78 rows=7514984 width=39) (actual time=118170.107..118170.107 rows=99 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 7kB
                           Buffers: shared hit=639468 read=717131
                           ->  Hash Join  (cost=2177844.75..2960003.78 rows=7514984 width=39) (actual time=101078.189..118168.961 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=639468 read=717131
                                 ->  Hash Join  (cost=2108816.75..2740676.10 rows=7514984 width=20) (actual time=98756.111..115840.474 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=639465 read=681856
                                       ->  Seq Scan on orders  (cost=0.00..404074.68 rows=15029968 width=16) (actual time=0.017..10610.328 rows=15015000 loops=1)
                                             Buffers: shared hit=165737 read=88038
                                       ->  Hash  (cost=2058929.16..2058929.16 rows=3991007 width=4) (actual time=98542.150..98542.150 rows=99 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 4kB
                                             Buffers: shared hit=473728 read=593818
                                             ->  HashAggregate  (cost=1969131.50..2019019.09 rows=3991007 width=8) (actual time=88392.161..98541.164 rows=99 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 15014901
                                                   Buffers: shared hit=473728 read=593818
                                                   ->  Seq Scan on lineitem  (cost=0.00..1668603.00 rows=60105700 width=8) (actual time=0.013..31031.331 rows=60045603 loops=1)
                                                         Buffers: shared hit=473728 read=593818
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=2319.590..2319.590 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=3 read=35275
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.023..1400.293 rows=1500000 loops=1)
                                             Buffers: shared hit=3 read=35275
 Total runtime: 169120.146 ms
(39 rows)

COMMIT;
COMMIT